The Windows Live Toolbar Custom Button Software Development Kit (SDK) shows how you can extend Toolbar with custom buttons. This SDK provides a quick overview of how users can install publicly available buttons and create their own simple buttons. Most of this SDK, however, shows how you can use XML to create more sophisticated custom buttons, and how you can distribute those buttons to users.
In order to use or develop custom buttons, you must have installed Windows Live Toolbar version 3.0 or higher installed. Custom buttons are